EP2830378B1 - Ressourcenzuweisungsanzeigeverfahren, ressourcenzuweisungsverfahren und vorrichtung - Google Patents

Ressourcenzuweisungsanzeigeverfahren, ressourcenzuweisungsverfahren und vorrichtung Download PDF

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Publication number
EP2830378B1
EP2830378B1 EP13764789.7A EP13764789A EP2830378B1 EP 2830378 B1 EP2830378 B1 EP 2830378B1 EP 13764789 A EP13764789 A EP 13764789A EP 2830378 B1 EP2830378 B1 EP 2830378B1
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Prior art keywords
riv
crbs
resource
network side
side device
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English (en)
French (fr)
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EP2830378A4 (de
EP2830378A1 (de
Inventor
Wen Zhang
Yongxia Lv
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT

Definitions

  • the present invention relates to the field of communications technologies, particularly to a method for indicating resource assignment, a method and a device for assigning a resource.
  • Machine to machine (Machine to Machine, M2M) is an internet where objects are interconnected, and it can connect all the objects to the Internet via an information sensing device to realize intellectual identification and management.
  • the 3 rd generation partnership project (The 3 rd Generation Partnership Project, 3GPP) especially establishes a project team 'Provision of low-cost MTC UEs based on LTE", studying enhancement or optimization necessary to be performed on the mobile communications network with respect to an introduction of a low-cost (low-cost) machine type communication (Machine Type Communication, MTC) user equipment (User Equipment, UE).
  • the project team has recognized several directions capable of reducing the UE cost, such as reducing the UE cost by reducing a bandwidth supported by the UE.
  • reducing the bandwidth supported by the UE there are two approaches under discussion by the project team: one is that the UE can only support narrowband, and the narrowband is baseband; another is that the UE is capable of supporting broadband, however, the number of a resource block (Resource Block, RB) that a system can assign to the UE and the UE can schedule is limited, such as 6 RBs.
  • RB resource block
  • the above changes lead to possible changes on the way of indicating resource assignment in downlink control information (Downlink Control Information, DCI).
  • DCI Downlink Control Information
  • US 2011/0085513 A1 discloses methods, systems, apparatus and computer program products to receive DCI in a downlink control channel, to detect which of the clustered uplink resource allocation protocol is indicated and to allocate the uplink resources based on the indicated uplink resource allocation protocol.
  • EP 2 175578 A1 discloses a method and apparatus for generating and parsing continuous resource allocation signaling to ensure that the overhead of resource allocation signaling is always ceil [log 2 ( N ( N +1)/2)] under any resource allocation situation.
  • Embodiments of the present invention provide a method for indicating resource assignment, a method for assigning a resource and a corresponding device so as to solve the problem of how to perform resource assignment or resource assignment indication for a UE.
  • Embodiments of the present invention provide a method for indicating resource assignment, a method for assigning a resource and corresponding devices, in calculating the resource indication value, the network side device in a communication system can assign to one UE the number N 0 of the RB which the UE can schedule in maximum, realizing resource assignment or resource assignment indication for the UE, especially for the low cost UE, thus being capable of saving the number of bits used for the resource indication and reducing the signaling cost.
  • the embodiments of the present invention provide a method for indicating resource assignment, a method for assigning a resource and devices.
  • the embodiment of the present invention are further described in the following with combination of the embodiments and drawings.
  • the present embodiment assumes that a UE can support broadband, but the number of the RBs which the network side device of a communication system can assign to one UE and the one UE can schedule in maximum is limited.
  • a method for indicating resource assignment provided by the present embodiment includes the following steps as shown in FIG. 1 .
  • the network side device of the communication system can know the UE is a low-cost UE via information interaction with the UE, and then knows the number N 0 of the RB that the network side device of the communication system is able to assign to the UE and the UE can schedule in maximum.
  • the network side device mentioned may be a base station (Node B).
  • the number of the resource block (RB) which a network side device of a communication system is able to assign to a UE and the UE can schedule in maximum is denoted as N 0
  • the number of resource blocks corresponding to the bandwidth which the communication system can assign to all UEs for use is denoted as N RB
  • N 0 ⁇ N RB the number of resource blocks corresponding to the bandwidth which the communication system can assign to all UEs for use
  • N RB DL the number of a resource block corresponding to the downlink bandwidth which the communication system can assign to the UE for scheduling
  • N RB UL the number of the resource block corresponding to the uplink bandwidth
  • the above communication system may be a long term evolution (LTE, Long Term Evolution) system.
  • LTE Long Term Evolution
  • the LTE system defines a physical downlink control channel (Physical Downlink Control Channel, PDCCH), and the PDCCH is used for carrying downlink control information (DCI).
  • the DCI can be used for indicating resource assignment on a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) and a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH).
  • PDSCH Physical Downlink Shared Channel
  • PUSCH Physical Uplink Shared Channel
  • the network side device can assign a resource to the UE by using a way of continuous resource assignment, the assigned resource can be indicated by two parameters of a location of the resource and a length of the resource.
  • the network side device indicates the location of the resource assigned to the UE and the length of the resource to the UE via a resource indication value (Resource Indication Value, RIV) in DCI.
  • RIV Resource Indication Value
  • the location of the resource assigned to the UE can be represented by a sequence number RB START of a starting resource block of a continuous resource block assigned to the UE for scheduling; the length of the resource assigned to the UE can be represented by the number L CRBs of the continuous resource block assigned to the UE for scheduling.
  • RB START is the sequence number of the starting resource block in the N RB resource blocks corresponding to a bandwidth assigned to the UE for scheduling
  • L CRBs is no greater than N 0 , i.e., the number L CRBs of the continuous resource block assigned to the UE for scheduling is less than or equal to the number of the resource block (RB) which the network side device of the communication system can assign to the UE in maximum and which the UE can schedule.
  • the location of the resource assigned to the UE is not limited to be represented by the sequence number of the starting resource block of the continuous resource block assigned to the UE, for example, it can be represented by the sequence number of an ending resource block in the continuous resource block assigned to the UE, or be represented by the sequence number of a certain resource block assigned to the UE, as long as the UE is able to determine the assigned resource according to the location of the resource and the length of the resource.
  • the RIV represents one state among all possible combinations of ( RB START , L CRBs ).
  • the RIV sent to the UE indicates the location of the resource assigned to the UE for scheduling and the length of the resource. After receiving the RIV, the UE is able to determine the resource that it will use. If the RIV is represented in binary, the number (n bit ) of bits required by the resource indication value RIV needs to enable the number of the RIVs, which can be represented by the number of bits, to represent all possible combinations of ( RB START , L CRBs ).
  • the number of states of the ( RB START , L CRBs ) combination represents the number of possible combinations of ( RB START , L CRBs ), and the number (n bit ) of bits required by the RIV needs to be able to represent how many bits are required for this number of the states.
  • the number of bits required for denoting the RIV is determined by N RB
  • ⁇ ⁇ refers to round up.
  • An RIV calculation formula requires to be designed according to the calculated number of bits, to enable the calculated RIV to be able to represent any one of all possible combinations of ( RB START , L CRBs ), therefore, the number n bit of bits required by the RIV should satisfy 2 n bit , at least equals the number of combinations of ( RB START , L CRBs ) or is at least no less than a value which is equal to the number of combinations of ( RB START , L CRBs ) minus 1.
  • the RIV is calculated according to N RB , one RIV calculation formula is: when L CRBs -1 ⁇
  • the UE can support the broadband, the UE cannot schedule all the RBs corresponding to the bandwidth assigned by the communication system for all UEs to use, and the UE can only schedule L CRBs RB; and, because the UE can support only N 0 resource blocks in maximum, when performing resource assignment for this type of UE according to the continuous resource assignment way, the number of bits required for denoting the RIV cannot only be calculated according to the N RB , and the effect of N 0 should be taken into consideration, i.e., it is required to calculate the number n bit of bits required for denoting the RIV according to both N RB and N 0 .
  • n bit ⁇ log 2 (( N RB -N 0 +1)* N 0 + N 0 (N 0 - 1)/2) ⁇ .
  • the number of the RB which the network side device of a communication system can assign to one UE and the one UE can schedule in maximum is limited, i.e., it is less than all RBs corresponding to the bandwidth that the communication system can assign to all UE for use, if resource assignment is performed for the UE, since the number of states of the ( RB START , L CRBs ) combination reduces, then the number of bits required for denoting the RIV may reduce. Because, according to the prior art, when calculating the RIV, it only takes into account the number of all RBs corresponding to the bandwidth which is able to be assigned to all UEs for use, i.e. N RB , the number of bits required is relatively more.
  • the RIV may become discontinuous and need relatively more bits, which wastes signaling cost.
  • the RIV calculated with the current RIV calculation formula may be any one of 8 numbers from 0 to 7.
  • the number of the RB which the network side device of a communication system is able to assign to the UE and the UE can schedule in maximum is limited, assuming that the number of bits required in the continuous resource assignment way reduces to 2, there are only 4 states needed, according to the current RIV calculation formula, only 4 numbers of the 8 numbers from 0 to 7 are required to represent all the states, and the other 4 numbers not in use are wasted. Therefore, the way of calculating the RIV is in need of improvement.
  • the design principle of the RIV calculation formula is to make the number of RIV values calculated with the RIV calculation formula be consistent with the number of states which can be represented by the number of bits required by the RIV
  • the consistency may indicate that the number of the RIV values calculated with the RIV calculation formula at least equals the number of states that can be represented by the number of bits required by the RIV.
  • a plurality of new RIV calculation formulas can be designed. Where, based on the above design principle, the new RIV calculation formula must take into account the effect of N 0 , i.e., it requires to calculate the RIV according to both N RB and N 0 .
  • the present embodiment provides an example of calculating the RIV which can calculate the RIV according to the following formulas.
  • the above calculation formula of the RIV is only an example that the present invention provides, according to the design principle, a plurality of new RIV calculation formulas can also be designed.
  • the method according to the embodiments of the present invention can calculate the RIV using any RIV calculation formulas designed according to the above design principle.
  • the network side device sends the calculated resource indication value RIV to the UE so as to realize the indication of the assigned resource.
  • the UE can calculate, for example, a logical sequence number of the starting RB and the number of RB, of the assigned resource, according to the received RIV.
  • the RIV calculated according to the above RIV calculation formula is decimal
  • the network side device can convert the decimal RIV into a binary one, then, sends the binary RIV to the UE.
  • the RIV is carried in DCI and is transmitted to the UE via a PDCCH.
  • the method according to the present embodiment can be used for indicating downlink PDSCH resource assignment, and can also be used for indicating uplink PUSCH resource assignment.
  • the RB START and L CRBs are the staring location and the length of the PDSCH resource assigned to the UE, respectively.
  • the RB START and L CRBs are the starting location and the length of the PUSCH resource assigned to the UE.
  • the starting location refers to the logical sequence number of the starting resource block
  • the length refers to the number of the continuous resource block included in the assigned resource.
  • the RIV can be carried in the DCI to be transmitted to the UE, and there is a specified field in the DCI for indicating the RIV.
  • the DCI used for the uplink and downlink resource assignment indication can respectively use only one format, where one DCI format used for indicating PDSCH resource assignment is named as a first DCI, and another DCI format used for indicating PUSCH resource assignment is named as a second DCI.
  • the DCI format may use an existing DCI format, for example, the first DCI uses Format 0, and the second DCI uses Format 1A.
  • the number of the spare bits or states can be obtained according to protocols. The embodiment will be illustrated by taking 2 spare bits as an example, however, not limited to 2 spare bits.
  • the network side device may set all the spare bits to either 0 or 1, for identifying that the present DCI is to schedule a UE with limited resource so as to lower the DCI missed detection probability of the UE.
  • the network side device may also indicate discontinuous reception (Discontinuous Reception, DRX) information using a spare bit or state, including any one or any combination of the following modes:
  • the DCI missed detection probability of the UE may be lowered by the spare bit indicating different sleep times or indicating different times to start the sleep time, etc.
  • the DCI format may be redesigned.
  • a manner of filling a padding bit with 0 or 1 can be adopted to make the number of bits of the first DCI equal the number of bits of the second DCI.
  • the padding bit may be all set to 0, or to 1, or to 0 and 1, for example, may be filled in combination with the usage ways of the spare bit according to the above embodiment.
  • the UE when the UE performs blind detection in the specialized search space, only the DCI format of one type of length needs to be detected, compared with the solution in the prior art which requires DCI formats of at least two types of length, the number of times of blind detection is reduced to half, and thereby the power consumption of the UE can be reduced.
  • the transmission performance of the PDCCH can be increased by repeating the information bit in the DCI.
  • the same information can be transferred twice, thus improving correction capability and demodulation capability, realizing the improvement on the transmission capability of the PDCCH.
  • the spare bit in the field of resource block assignment (Resource block assignment) can be used for the repetition of the field, or the repetition of other key fields.
  • the repetition may refer to a repetition of a single bit, for example, "01" is repeated as "0011"; may also refer to a repetition of a plurality of bits, for example, "01” is repeated as "0101"; or, may refer to other types of repetition.
  • the embodiment of the present invention provides a method for indicating resource assignment for a UE under a condition that the number of RB which the network side device of the communication system can assign to one UE and the one UE can schedule in maximum is limited, the method takes into account the number of the RB which the network side device of the communication system can assign to the UE and the UE can schedule in maximum during the calculation of a resource indication value, and thus is capable of saving the number of bits used for the resource indication and lowering the signaling cost.
  • the executive entity of the method for indicating resource assignment according to the embodiment may be a base station.
  • the present invention may achieve a reduction of the DCI missed detection probability of the UE, a reduction of the power consumption of the UE, an improvement of correction capability and demodulation capability, and an enhancement of the transmission capability of the PDCCH,.
  • the present embodiment may assign a continuous PRB or VRB to the UE.
  • the method according to the present embodiment may indicate whether to use a distributed VRB mapping by working with a localized/distributed (Localized/Distributed) virtual resource block (Visual Resource Blocks, VRB) assignment flag (assignment flag).
  • the RBs assigned in the continuous assignment way is VRB
  • the RIV indicates the assignment way of the VRB.
  • the UE and the network side device have the one-to-one mapping relationship between the VRB and the PRB.
  • the UE After obtaining the RIV and calculating the assigned VRB according to the RIV, the UE can obtain the location of the PRB according to the mapping relationship. Therefore, when continuous VRB is assigned, with the cooperation of the Localized/Distributed VRB assignment flag for indicating whether to use the distributed VRB mapping, it can be achieved to assign the discontinuous distributed PRB to the UE.
  • RIV is calculated using the method according to the embodiments of the present invention, the RIV is sent to the user equipment, where the RIV is used to indicate the VRB; meanwhile, the Localized/Distributed VRB assignment flag is used to indicate the usage of a distributed VRB mapping, and the user equipment is informed of the mapping relationship existing between the VRB and the PRB.
  • the present embodiment also provides a method for obtaining resource assignment. As shown in FIG. 2 , the method includes following steps.
  • Step 201 a user equipment receives a resource indication value RIV sent by a network side device, where the resource indication value RIV is a resource indication value that is calculated by the network side device according to the number N 0 of an RB which the network side device can assign to the UE and the UE can schedule in maximum and the number N RB of resource blocks corresponding to a bandwidth which the network side device can assign to all UEs for use.
  • the resource indication value RIV is a resource indication value that is calculated by the network side device according to the number N 0 of an RB which the network side device can assign to the UE and the UE can schedule in maximum and the number N RB of resource blocks corresponding to a bandwidth which the network side device can assign to all UEs for use.
  • n bit ⁇ log 2 (( N RB -N 0 +1) ⁇ N 0 + N 0 ( N 0 -1 ) /2) ⁇ .
  • the network side device carries the resource indication value RIV in downlink control information DCI of a physical downlink control channel PDCCH;
  • the UE receives the RIV by receiving the downlink control information DCI.
  • Step 202 the user equipment obtains a location of a resource assigned to the user equipment and a length of the resource according to the received RIV.
  • each value of RIV corresponds to a state of the ( RB START , L CRBs ) combination; correspondingly, the UE can store a correspondence between the RIV and ( RB START , L CRBs ), therefore, after receiving the RIV, it can obtain the location of the resource assigned to the user equipment and the length of the resource according to the received RIV
  • the UE after receiving the RIV carried by the DCI, the UE can calculate the assigned resource according to the RIV, for example, it can calculate the logical sequence number of a starting RB of the assigned resource, and the length of the assigned resource, i.e., the number of the RB included in the assigned resource.
  • the following actions of the UE can be defined as: discard the RIV data received this time; or, use the starting RB corresponding to the RIV as the starting location of the resource, and use a preset value as the length of the resource, such as min( N RB - RB start N 0 ).
  • the above actions i.e.
  • discard the RIV data received this time; or, use the starting RB corresponding to the RIV as the starting location of the resource, and use a preset value as the length of the resource length) are also applicable to the following situation, i.e., in the resource assignment of an uplink scheduling signaling (UL grant) in a random access response (Random Access Response, RAR) message received by the UE, the length of the assigned resource exceeds the length of the RB that is supported by the UE.
  • UL grant uplink scheduling signaling
  • RAR Random Access Response
  • the embodiment of the present invention provides a method for obtaining resource assignment for a UE which supports a reduced bandwidth, according to the method, when obtaining the resource assignment, the obtained resource indication value is calculated according to the number N 0 of the RB which the network side device of the communication system can assign to one UE and the one UE can schedule in maximum, thus being capable of saving the number of bits used for the resource indication and lowering the signaling cost.
  • the present embodiment assumes the UE is only able to support narrowband in downlink, and the narrowband is baseband.
  • a narrowband PDCCH is used for the control information of the UE, such as an enhanced PDCCH (enhanced PDCCH, e-PDCCH), for a transmitting condition, the PDSCH is also only able to be transmitted within this narrowband. For example, suppose UE only supports N 0 RB in the narrowband, then a narrowband PDCCH and corresponding PDSCH also can only be transmitted within the N 0 RB.
  • a method for assigning a resource of the UE provided by the embodiment includes the following steps, as shown in FIG. 3 .
  • the UE can obtain the location of the PDCCH by following ways:
  • the network side device such as a base station, can use the DCI information of the last previous PDCCH to indicate, to the UE, the location of the subband where the PDCCH locates, i.e., the subband where the N 0 RB of the next PDCCH locate.
  • the location of the RB assigned for the PDCCH in the subband may be a fixed location of the subband; or may also be indicated to the UE by other ways.
  • the resource block assignment (Resource block assignment) in the DCI needs not to assign on the entire system bandwidth, but only needs to assign within the subband where the PDCCH locates.
  • Two resource assignment modes can be used for indication, one is that, when assigning a resource for the PDSCH by using the way of a bitmap (bitmap), and when indicating to the UE the resource assigned for the PDSCH, it is required to use the bitmap to indicate to the UE the location of the resource assigned for the PDSCH.
  • N 0 6
  • the DCI used for uplink and downlink resource assignment indication can respectively use only one type of DCI format, where one DCI format used for PDSCH resource assignment is named as a first DCI, and another DCI format used for PUSCH resource grant is named as a second DCI.
  • the DCI used for resource assignment can use an existing DCI format, for example, the Format 0. At this moment, there will be some spare bits or states in the DCI. Certainly, a new DCI format can be redesigned also.
  • a manner of setting a padding bit to 0 or 1 can be adopted to make the number of bits of the first DCI equal the number of bits of the second DCI.
  • the padding bit can be all set to 0, or to 1, or to 0 and 1. Therefore, the times that the UE performs blind detection in the specialized search space can be reduced to half, thereby reducing the power consumption and DCI missed detection probability of the UE.
  • the network side device can indicate the location of a next narrowband PDCCH using the spare bit or state in the DCI of the narrowband PDCCH.
  • the bandwidth of the system is 50 RBs and the bandwidth of the UE is 6 RBs
  • the network side device also can instruct the UE to start PDCCH frequency hopping or change a frequency hopping mode, by using the spare bit or state in the DCI of the narrowband PDCCH.
  • the network side device also can indicate discontinuous reception (Discontinuous Reception, DRX) information of the UE by using the spare bit or state in the DCI of the narrowband PDCCH.
  • DRX discontinuous Reception
  • the solution that may be used by the DCI format can be the same as the solution used in the embodiment one, in order to save pages, the details will not be repeated herein.
  • the embodiment of the present invention provides a method for indicating resource assignment with regard to a UE which only supports narrowband in downlink.
  • the resource assignment for the UE only supporting the narrowband can be realized, and the number of bits required for the resource assignment can be reduced.
  • the executive entity of the method for assigning a resource of the embodiment may be a base station.
  • the embodiment provides a method for assigning a resource, where assuming that the UE is only able to support narrowband in downlink, and the narrowband is baseband.
  • the control information of the UE uses a narrowband PDCCH, such as an e-PDCCH, for the transmitting condition, the PDSCH is also only able to be transmitted within the narrowband. For example, suppose the UE in narrowband only support N 0 RB, the narrowband PDCCH and corresponding PDSCH also can only be transmitted within the N 0 RB.
  • a method for assigning a resource of the UE provided by the embodiment includes the following steps, and for corresponding figures thereof, please refer to steps 301 and 302 of FIG. 3 .
  • the PDSCH is also within the subband where the PDCCH locates, therefore, the resource block assignment (Resource block assignment) in the DCI needs not to assign on the entire system bandwidth, nut only needs to assign within the subband where the PDCCH locates.
  • Two resource assignment modes can be used to assign a resource for the PDSCH, one is to use a way of a bitmap, and the other is to use a way of continuous resource assignment.
  • the solution that may be used for the DCI format can be the same as the solution of embodiment one, in order to save pages, the details will not be repeated herein.
  • the embodiment of the present invention provides a method for assigning a resource with regard to the UE that only supports narrowband in downlink.
  • the resource assignment for the UE only supporting the narrowband can be realized, and the number of bits required for the resource assignment can be reduced.
  • the executive entity of the method for assigning a resource according to the embodiment may be a base station.
  • a method for indicating resource assignment includes the following steps, as shown in FIG. 4 .
  • the network side device such as a base station, can calculate and obtain the subband where the PDCCH locates using a narrowband PDCCH frequency hopping formula, at this moment, it is not necessary to indicate to the UE the location of the subband.
  • the UE can calculate out the location of the subband by using the same narrowband PDCCH frequency hopping formula.
  • the network side device such as a base station, can indicate the location of the subband where the PDSCH locates to the UE by using a last preset subband identifier.
  • Two resource assignment ways can be used to indicate a location of the PDSCH resource in the subband, one is that when assigning the resource for the PDSCH by using the way of the bitmap (bitmap), and when indicating to the UE the resource assigned for the PDSCH, it is required to use the bitmap to indicate to the UE the location of the resource assigned for the PDSCH.
  • bitmap bitmap
  • a corresponding method for assigning a resource provided by the embodiment with regard to this type of UE includes the following steps, refer to steps 501 and 502 in FIG. 4 .
  • the solution that may be used for the DCI format can be the same as the solution of embodiment one, in order to save pages, the details will not be repeated herein.
  • the embodiment of the present invention provides a method for assigning a resource with regard to the UE with a limited scheduling bandwidth.
  • the resource assignment for the UE only supporting the narrowband can be realized, and the number of bits required for the resource assignment can be reduced.
  • the executive entity of the method for assigning a resource according to the embodiment can be a base station.
  • the present embodiment provides a network side device, as shown in FIG. 5 , including:
  • n bit ⁇ log 2 (( N RB - N 0 +1) ⁇ N 0 + N 0 ( N 0 -1)/2) ⁇ .
  • the calculating module 602 includes:
  • the calculating module 602 includes:
  • the calculating module 602 includes:
  • the resource indication value RIV is carried in downlink control information DCI of a physical downlink control channel PDCCH, and is sent to the user equipment through the DCI.
  • the downlink control information DCI includes a first DCI used for a physical downlink shared channel PDSCH and a second DCI used for a physical uplink shared channel PUSCH.
  • the sending module 603 is also configured to make the number of bits of the first DCI to be equal to that of the second DCI by using a way of padding a bit.
  • the sending module 603 is also configured to set all spare bit in the DCI to 0 or 1.
  • the spare bit in the DCI indicates discontinuous reception DRX information of the user equipment.
  • the sending module 603 indicating discontinuous reception DRX information of the user equipment by using a spare bit in the DCI includes one or any combination of the following ways:
  • what the RIV indicates is a location of a continuous physical resource block and a length of the resource block.
  • the sending module 603 indicates whether to use a distributed virtual resource block VRB mapping by using a localized/distributed virtual resource block VRB assignment flag in the downlink control information DCI.
  • the embodiment of the present invention provides a network side device, which takes into account the maximum number of the resource block supported by the user equipment in the calculation of the resource indication value, the number of bits used for the resource indication can be saved and the signaling cost is reduced.
  • the device for indicating resource assignment specifically can be a base station.
  • the embodiment of the present invention provides a UE, including:
  • n bit ⁇ log 2 (( N RB -N 0 +1) ⁇ N 0 + N 0 ( N 0 -1)/2) ⁇ .
  • the UE can also include:
  • the embodiment of the present invention provides a user equipment with regard to the UE that only supports narrowband in downlink. It may realize the resource assignment for the UE that only supports the narrowband, and may reduce the number of bits required for the resource assignment.
  • the embodiment of the present invention also provides a network side device, including:
  • the network side device can also include:
  • the assigning module is also configured to calculate a subband where the PDCCH locates by using a narrowband PDCCH frequency hopping formula.
  • the indicating module 803 includes:
  • the indicating module 803 includes:
  • the indicating module 803 includes:
  • the embodiment of the present invention also provides a network side device. Please refer to FIG. 8 for the schematic block diagram of the network side device, which includes:
  • the network side device can also include:
  • the assigning module 902 is also configured to calculate a subband where the PDSCH locates by using a narrowband PDSCH frequency hopping formula.
  • the indicating module 903 includes:
  • the indicating module 903 includes:
  • the indicating module 903 includes:
  • the division of the function modules is set forth as examples, in practical application, the above functions may be assigned to different function modules to be accomplished according to requirements, for example, configuration requirements of corresponding hardware or consideration on convenient implementation of software, i.e., divide the inner structure of the device into different function modules so as to accomplish the entire or part functions as set forth above.
  • corresponding function modules in the embodiments can be implemented by corresponding hardware, such as a transceiver, a processor, etc, or be accomplished by corresponding hardware executing corresponding software (the principle set forth above is applicable to each embodiment provided by the description).

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Claims (12)

  1. Verfahren zum Angeben einer Betriebsmittelzuweisung, wobei das Verfahren Folgendes umfasst:
    Erhalten (101) einer Anzahl N0 von Betriebsmittelblöcken, RBs, durch eine netzseitige Vorrichtung, wobei die Anzahl N0 von RBs die Anzahl von RBs ist, die ein Teilnehmergerät, UE, maximal planen kann und die dem einen UE durch die netzseitige Vorrichtung zugewiesen werden können;
    Berechnen (102) eines Betriebsmittelangabewerts, RIV, durch die netzseitige Vorrichtung in Übereinstimmung mit der N0 des UE und mit einer Anzahl NRB von RBs, wobei die NRB die Anzahl der RBs ist, die einer Bandbreite entsprechen, die die netzseitige Vorrichtung allen UEs zur Verwendung zuweisen kann, und wobei alle UEs UEs sind, die auf die netzseitige Vorrichtung zugreifen; und
    Senden (103) des RIV an das eine UE durch die netzseitige Vorrichtung;
    wobei
    die Anzahl nbit binärer Bits zum Bezeichnen des berechneten RIV beim Berechnen des RIV in Übereinstimmung mit der NRB und mit der No n bit = ⌈ log 2 N RB − N 0 + 1 ⋅ N 0 + N 0 N 0 − 1 / 2 ⌉ gen u ¨ gt .
    Figure imgb0011
     genügt.
  2. Verfahren nach Anspruch 1, wobei das Berechnen des RIV Folgendes umfasst:
    Vergleichen von RBSTART und NRB - N0, falls RBSTART ≤ NRB - No ist,
    RIV = RBSTARTN0 + LCRBs 1 + a, wobei die LCRBs die Anzahl LCRBs eines zusammenhängenden Betriebsmittelblocks ist, die dem UE für die Planung zugewiesen werden, LCRBs ≤ N0 ist, a eine ganzzahlige Konstante ist und ein Wertebereich von a 0≤a≤NRB-[(NRB-N0)N0+N0-1] ist;
    wobei RBSTART eine laufende Nummer eines Anfangs-RB in den NRB RBs ist.
  3. Verfahren nach Anspruch 1, wobei das Berechnen des RIV Folgendes umfasst:
    Vergleichen von RBSTART und NRB - N0, falls RBSTART > NRB - N0 ist, ferner Vergleichen von LCRBs - 1 und └(N0 - 1)/2┘;
    und falls und falls L CRBs − 1 ≤ ⌊ N 0 − 1 / 2 ⌋ ist :
    Figure imgb0012
     ist: RIV = N 0 N RB − N 0 + 1 + N 0 − 1 L CRBs − 1 + RB START − N RB − N 0 + 1 ,
    Figure imgb0013
     oder RIV = N 0 N RB − N 0 + 1 + N 0 − 1 L CRBs − 1 + RB START − N RB − N 0 + 1 + b ;
    Figure imgb0014
    wobei die LCRBs die Anzahl LCRBs eines zusammenhängenden Betriebsmittelblocks ist, die dem UE für die Planung zugewiesen werden, 1 ≤ LCRBs ≤ NRB-RBSTART ist, b eine ganzzahlige Konstante ist und b ermöglicht, dass der durch
    RIV=N0(NRB-No + 1) + (N0-1)(LCRBs-1) + RBSTART-(NRB-No + 1) + b erhaltene RIV innerhalb [0, NRB] liegt, wobei RBSTART eine laufende Nummer eines Anfangs-RB in den NRB RBs ist.
  4. Verfahren nach Anspruch 1, wobei das Berechnen des RIV Folgendes umfasst:
    Vergleichen von RBSTART und NRB - N0, falls RBSTART > NRB - N0 ist, ferner Vergleichen von LCRBs - 1 und └(N0-1)/2┘;
    und falls und falls L CRBs − 1 > ⌊ N 0 − 1 / 2 ⌋ ist ,
    Figure imgb0015
     ist, RIV = N 0 N RB − N 0 + 1 + N 0 − 1 N 0 − L CRBs + N RB − RB START − 1 ,
    Figure imgb0016
     oder RIV = N 0 N RB − N 0 + 1 + N 0 − 1 N 0 − L CRBs + N RB − RB START − 1 + c ;
    Figure imgb0017
    wobei die LCRBs die Anzahl der LCRBs eines zusammenhängenden Betriebsmittelblocks ist, die dem UE für die Planung zugewiesen werden, 1 ≤ LCRBs ≤ NRB - RBstart ist, c eine ganzzahlige Konstante ist und das c ermöglicht, dass der durch
    RIV = N0(NRB-N0 + 1) + (N0 - 1)(N0-LCRBs)+ NRB-RBSTART-1 + c erhaltene RIV innerhalb von [0, NRB] liegt, wobei RBSTART eine laufende Nummer eines Anfangs-RB in den NRB RBs ist.
  5. Verfahren nach einem der Ansprüche 1 bis 4, wobei das Senden des berechneten RIV an das UE Folgendes umfasst:
    Führen des RIV in Abwärtsstreckensteuerinformationen, DCI, eines physikalischen Abwärtsstreckensteuerkanals, PDCCH; und
    Senden der DCI an das UE.
  6. Netzseitige Vorrichtung, die Folgendes umfasst:
    ein Modul (601) zum Erhalten, das dafür konfiguriert ist, eine Anzahl N0 von Betriebsmittelblöcken, RBs, zu erhalten, wobei die Anzahl N0 von RBs die Anzahl von RBs ist, die ein Teilnehmergerät, UE, maximal planen kann und die dem einen UE durch die netzseitige Vorrichtung zugewiesen werden können;
    ein Modul (602) zum Berechnen, das dafür konfiguriert ist, einen Betriebsmittelangabewert, RIV, in Übereinstimmung mit einer Anzahl NRB der RBs, die einer Bandbreite entsprechen, die die netzseitige Vorrichtung allen UEs zur Verwendung zuweisen kann, und dem durch das Modul (601) zum Erhalten erhaltenen N0 zu berechnen, wobei alle UEs UEs sind, die auf die netzseitige Vorrichtung zugreifen; und
    ein Modul (603) zum Senden, das dafür konfiguriert ist, den durch das Modul (602) zum Berechnen berechneten RIV an das eine UE zu senden;
    wobei
    das Modul (602) zum Berechnen spezifisch dafür konfiguriert ist, das RIV in Übereinstimmung mit der NRB und mit der N0 wie folgt zu berechnen: die Anzahl nbit binärer Bits zum Bezeichnen des berechneten RIV genügt n bit = ⌈ log 2 N RB − N 0 + 1 ⋅ N 0 + N 0 N 0 − 1 / 2 ⌉ .
    Figure imgb0018
  7. Netzseitige Vorrichtung nach Anspruch 6, wobei das Modul (602) zum Berechnen Folgendes umfasst:
    eine Vergleichseinheit (6021), die dafür konfiguriert ist, RBSTART und NRB - N0 zu vergleichen; und
    eine erste Berechnungseinheit (6022), die dafür konfiguriert ist, falls die Vergleichseinheit RBSTART ≤ NRB - N0 erhält, RIV = RBSTARTN0+ LCRBs-1 + a zu setzen, wobei die LCRBs die Anzahl LCRBs eines zusammenhängenden Betriebsmittelblocks sind, die dem UE für die Planung zugewiesen werden, LCRBs ≤ N0 ist, a eine ganzzahlige Konstante ist und ein Wertebereich von a 0 ≤ a ≤ NRB - [(NRB - N0)N0 + N0 - 1] ist und wobei der RBSTART eine laufende Nummer eines Anfangs-RB in den NRB RBs ist.
  8. Netzseitige Vorrichtung nach Anspruch 6, wobei das Modul (602) zum Berechnen Folgendes umfasst:
    eine Vergleichseinheit (6021), die dafür konfiguriert ist, RBSTART und NRB - N0 zu vergleichen, und falls RBSTART > NRB - N0 ist, ferner LCRBs - 1 und L(No - 1)/2┘ zu vergleichen;
    eine zweite Berechnungseinheit (6023), die dafür konfiguriert ist, falls die Vergleichseinheit LCRBs - 1 ≤ └(N0 - 1)/2┘ erhält,
    RIV = N0(NRB - N0 + 1) + (N0 - 1)(LCRBs - 1) + RBSTART - (NRB - N0 + 1) zu setzen, oder
    RIV = N0(NRB - N0 + 1) + (N0 - 1)(LCRBs - 1) + RBSTART - (NRB - N0 + 1) + b zu setzen;
    wobei die LCRBs die Anzahl LCRBs eines zusammenhängenden Betriebsmittelblocks ist, die dem UE für die Planung zugewiesen werden, 1 ≤ LCRBs ≤ NRB - RBSTART ist, b eine ganzzahlige Konstante ist und b ermöglicht, dass der durch RIV = N0(NRB - N0 + 1) + (No - 1)(LCRBs - 1) + RBSTART - (NRB - N0 + 1) + b erhaltene RIV innerhalb [0, NRB] liegt, wobei RBSTART eine laufende Nummer eines Anfangs-RB in den NRB RBs ist.
  9. Netzseitige Vorrichtung nach Anspruch 6, wobei das Modul (602) zum Berechnen Folgendes umfasst:
    eine Vergleichseinheit (6021), die dafür konfiguriert ist, RBSTART und NRB - N0 zu vergleichen, und falls RBSTART > NRB - N0 ist, ferner LCRBs - 1 und L(No - 1)/2┘ zu vergleichen;
    eine dritte Berechnungseinheit (6024), die dafür konfiguriert ist, falls die Vergleichseinheit LCRBs - 1 > L(No - 1)/2┘ erhält,
    RIV = N0(NRB - N0 + 1) + (N0 - 1)(N0 - LCRBs) + NRB - RBSTART - 1 zu setzen, oder
    RIV = N0(NRB - N0 + 1) + (N0 - 1)(N0 - LCRBs) + NRB - RBSTART - 1 + c zu setzen;
    wobei die LCRBs die Anzahl der LCRBs eines zusammenhängenden Betriebsmittelblocks ist, die dem UE für die Planung zugewiesen werden, 1 ≤ LCRBs ≤ NRB - RBstart ist, c eine ganzzahlige Konstante ist und das c ermöglicht, dass der durch RIV = N0(NRB - N0 + 1) + (No - 1)(N0 - LCRBs) + NRB- RBSTART- 1 + c erhaltene RIV innerhalb von [0, NRB] liegt, wobei RBSTART eine laufende Nummer eines Anfangs-RB in den NRB RBs ist.
  10. Netzseitige Vorrichtung nach einem der Ansprüche 6 bis 9, wobei das Modul (603) zum Senden spezifisch dafür konfiguriert ist, den berechneten RIV wie folgt an das UE zu senden:
    Führen des RIV in Abwärtsstreckensteuerinformationen, DCI, eines physikalischen Abwärtsstreckensteuerkanals, PDCCH, und Senden des RIV über die DCI an das UE.
  11. Verfahren zum Erhalten einer Betriebsmittelzuweisung, wobei das Verfahren Folgendes umfasst:
    Empfangen (201) eines durch eine netzseitige Vorrichtung gesendeten Betriebsmittelangabewerts, RIV, durch ein Teilnehmergerät, UE, wobei der RIV durch die netzseitige Vorrichtung in Übereinstimmung mit einer Anzahl N0 von Betriebsmittelblöcken, RBs, und der Anzahl NRB von RBs berechnet wird, wobei die Anzahl N0 von RBs die Anzahl von RBs ist, die ein UE maximal planen kann und die einem UE durch die netzseitige Vorrichtung zugewiesen werden, und wobei eine Anzahl NRB von RBs die Anzahl von RBs ist, die einer Bandbreite entsprechen, die die netzseitigen Vorrichtung allen UEs, die auf die netzseitige Vorrichtung zugreifen, zur Verwendung zuweisen kann; und
    Erhalten (202) eines Orts eines dem Teilnehmergerät zugewiesenen Betriebsmittels und einer Länge LCRBs des Betriebsmittels in Übereinstimmung mit dem empfangenen RIV durch das UE, wobei die LCRBs die Anzahl LCRBs eines zusammenhängenden Betriebsmittelblocks ist, die dem UE zur Planung zugewiesen werden;
    wobei beim Empfangen der durch die netzseitige Vorrichtung gesendeten RIV durch das UE die Anzahl nbit binärer Bits zum Bezeichnen des RIV der Formel nbit = ┌log2((NRB-N0 + 1)·No + N0(N0-1)/2)┐ genügt.
  12. Anwendergerät, UE, das Folgendes umfasst:
    ein Modul (701) zum Empfangen, das dafür konfiguriert ist, einen durch eine netzseitige Vorrichtung gesendeten Betriebsmittelangabewert, RIV, zu empfangen, wobei der RIV durch die netzseitige Vorrichtung in Übereinstimmung mit einer Anzahl N0 von Betriebsmittelblöcken, RBs, und der Anzahl NRB von RBs berechnet wird, wobei die Anzahl N0 von RBs die Anzahl von RBs ist, die ein UE maximal planen kann und die einem UE durch die netzseitige Vorrichtung zugewiesen werden kann, und wobei die Anzahl NRB die Anzahl von RBs ist, die einer Bandbreite entsprechen, die die netzseitigen Vorrichtung allen UEs, die auf die netzseitige Vorrichtung zugreifen, zur Verwendung zuweisen kann; und
    ein Modul (702) zum Erhalten eines Betriebsmittels, das dafür konfiguriert ist, einen Ort eines dem UE zugewiesenen Betriebsmittels und eine Länge LCRBs des Betriebsmittels in Übereinstimmung mit dem durch das Modul (701) zum Empfangen empfangenen RIV zu erhalten, wobei die LCRBs die Anzahl LCRBs eines zusammenhängenden Betriebsmittelblocks ist, die dem UE zur Planung zugewiesen werden;
    wobei in dem durch die netzseitige Vorrichtung gesendeten durch das Modul (701) zum Empfangen empfangenen RIV die Anzahl nbit binärer Bits zum Bezeichnen des RIV der Formel nbit = ┌log2((NRB - N0 + 1)·No + N0(N0 - 1)/2)1 genügt.
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WO2013139278A1 (zh) 2013-09-26
CN103327615B (zh) 2016-04-20
EP2830378A1 (de) 2015-01-28
US20150009939A1 (en) 2015-01-08
CN103327615A (zh) 2013-09-25
US9629142B2 (en) 2017-04-18

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